Putin doesnt look like he's working out everyday, but from all the things i've read about him and his past background, i WOULDNT like to mess with him lol.
Just remember his speech when the chechens tookover the theater full of kids, it was something like "HELL WILL RAISE UNDER THEIR FEETS". Also i remember when i saw him in Chile, 2 years ago i think, many presidents arriving to some political meeting and everybody was full of bodyguards, besides putin. He got off the car, took a quick view of all places (maybe he learned this back from his days @ kgb) and then walked alone, smiling, like a badass person not fearing anybody.
PUTIN = HARDCORE